Model: 16990-4C-10B

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.447 inches

Fastener Length

Between 0.595 inches and 0.625 inches

Head Style

Flat countersunk

Head Diameter

Between 0.480 inches and 0.531 inches

Internal Drive Style

Hexagon

End Application

An/blq10 (v) 4

Thread Diameter

0.250 inches

Width Across Flats

0.156 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

160000 pounds per square inch

Hardness Rating

36.0 rockwell c and 45.0 rockwell c

Countersink Angle

Between 80.0 degrees and 84.0 degrees

Part Name Assigned By Controlling Agency

Screw, machine

Material

Stainless steel

Surface Treatment

Oxide

Thread Series Designator

Unc

NSN

5305-01-605-7468

Part Number

16990-4C-10B

Description

Screw,cap,socket Head

CAGE

71838

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part 16990-4C-10B NSN 5305-01-605-7468

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16282

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

096640

UFC:

50600

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment